Here's what rhymes with impresario.
no so know go though although low show co row tho fo foe ho lo audio bo doe dough mo po ro toe wo woe folio tow yo beau ceux faut forego forgo goe hoe jo ko sew soe vo beaux cho dau mow noe roe sho yeux zo rho oleo whoa doh foreknow resew ago flow ratio blow grow radio slow snow throw pro glow quo fro crow patio stereo thro bio polio uno aliquot cameo floe presidio rodeo tuo bro stow throe trow chapeau sloe regrow kayo chapeaux fatso pekoe borzoi romeo tallyho schmo schmoe below embryo plateau portfolio studio chateau hello calico nouveau propos vertigo aglow apropos dicho escrow mistletoe siglo spatio topos chateaux dunno plateaux trousseau adagio kapok tarot turbot bandeau gateau matzoh gateaux trousseaux overthrow undergo bestow buffalo overflow indigo portico tableau domino outgrow tableaux oregano pistachio undertow deathblow overgrow mustachio moustachio bungalow dynamo politico medico afterglow piccolo pompano microdot braggadocio pianissimo archipelago generalissimo